1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020, Oracle and/or its affiliates. */
4 #include <test_progs.h>
6 #include "trace_printk.lskel.h"
8 #define SEARCHMSG "testing,testing"
10 static void trace_pipe_cb(const char *str, void *data)
12 if (strstr(str, SEARCHMSG) != NULL)
16 void serial_test_trace_printk(void)
18 struct trace_printk_lskel__bss *bss;
19 struct trace_printk_lskel *skel;
20 int err = 0, found = 0;
22 skel = trace_printk_lskel__open();
23 if (!ASSERT_OK_PTR(skel, "trace_printk__open"))
26 ASSERT_EQ(skel->rodata->fmt[0], 'T', "skel->rodata->fmt[0]");
27 skel->rodata->fmt[0] = 't';
29 err = trace_printk_lskel__load(skel);
30 if (!ASSERT_OK(err, "trace_printk__load"))
35 err = trace_printk_lskel__attach(skel);
36 if (!ASSERT_OK(err, "trace_printk__attach"))
39 /* wait for tracepoint to trigger */
41 trace_printk_lskel__detach(skel);
43 if (!ASSERT_GT(bss->trace_printk_ran, 0, "bss->trace_printk_ran"))
46 if (!ASSERT_GT(bss->trace_printk_ret, 0, "bss->trace_printk_ret"))
49 /* verify our search string is in the trace buffer */
50 ASSERT_OK(read_trace_pipe_iter(trace_pipe_cb, &found, 1000),
51 "read_trace_pipe_iter");
53 if (!ASSERT_EQ(found, bss->trace_printk_ran, "found"))
57 trace_printk_lskel__destroy(skel);